photoelectric

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photoelectric

, photoelectrical
of or concerned with electric or electronic effects caused by light or other electromagnetic radiation
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

photoelectric

[¦fōd·ō·i′lek·trik]
(electronics)
Pertaining to the electrical effects of light, such as the emission of electrons, generation of voltage, or a change in resistance when exposed to light.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

photoelectric

The conversion of photons into electrons. When light is beamed onto a metal, electrons are released from its atoms. The higher the light frequency, the more electron energy released. Photonic sensors of all kinds work on this principle. They sense light and cause an electric current to flow.

Although many people think Einstein won the Nobel Prize because of his Theory of Relativity, it was actually due to his discovery of the photoelectric effect. He theorized that light was made of particles (later called photons) and that it carried an amount of energy exactly proportional to its frequency. See phototransistor and photovoltaic.


A Photoelectric Sensor
The red arrow points to the light sensor, while the blue arrow points to the single LED in this night light. See LED bulb.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
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References in periodicals archive ?
A recent study in different neighborhoods in the Boston area also used a photoelectrical PAH monitor, although a different monitor was used than in our study and measurements were taken indoors (30).
Fine Particulate Matter and Polycyclic Aromatic Hydrocarbon Concentration Patterns in Roxbury, Massachusetts: A Community-Based GIS Analysis
The receiver, which distinguishes transmitters according to their different speeds ranging from 1000 to 3000 (r/min), is a photoelectrical sensor which can detect both the pulse signal and two laser beam signals at the time sequence as shown in Fig.
Workspace measuring and positioning system based on rotating laser planes/Darbo zonos matavimo ir pozicionavimo sistema su sukamomis lazerio plokstumomis
The photoelectrical spontaneous locomotor activity apparatus (model ZZ-6, China) was a round arena (34 cm in diameter) with the floor divided into 21 equal areas.
Antinociceptive activity of petroleum ether fraction from the MeOH extracts of Paederia scandens in mice
This diagram shows the time variation t of radiation intensity I of volatile substances caused as a result of combustion changed into an electric signal by means of an optical-electronical system equipped with a photoelectrical cell.
The soot and nitrogen oxide reduction using water/heavy fuel oil emulsion
The haziness and transmittance of the samples were measured with a photoelectrical hazemeter (WGW, Shanghai Precision & Scientific Instrument Co.) according to Chinese Standard GB/T 2410-80.
Influence of the amount of salts of rosin acid on the nonisothermal crystallization, morphology, and properties of Isotactic polypropylene
Murali, "Influence of thickness and substrate temperature on electrical and photoelectrical properties of vacuum-deposited CdSe thin films," Materials Chemistry and Physics, vol.
Effect of Precursor Concentration on Structural Optical and Electrical Properties of NiO Thin Films Prepared by Spray Pyrolysis
But they didn't investigate the effect of annealing on photoelectrical performance of the [In.sub.2][S.sub.3]:Ag films.
Optical and electrical properties of Ag-doped [In.sub.2][S.sub.3] thin films prepared by thermal evaporation
The linear photoelectrical transducer, laser interferometer or even precise linear optical scale (with microscope) can be used for this purpose.
Arrangement for vertical angle calibration of geodetic instruments/Irenginys geodeziniu prietaisu vertikaliesiems kampams kalibruoti
Korkut, "Electrical and photoelectrical characteristic investigation of a new generation photodiode based on bromothymol blue dye," Journal of Physics: Conference Series, vol.
Influence of Irradiation Time on Structural, Morphological Properties of ZnO-NRs Films Deposited by MW-CBD and Their Photodiode Applications
Song, "Abnormal photoelectrical properties and gas sensing of mesoporous [Sn.sub.0.9][Ti.sub.0.1] [O.sub.2] film under UV light," Materials Letters, vol.
Function of Ti[O.sub.2] lattice defects toward photocatalytic processes: view of electronic driven force
According to the requirement of photoelectrical properties of solar cell absorbers, sample CTS-4 has better properties than others.
Influence of sulfurization temperature on photoelectric properties [Cu.sub.2]Sn[S.sub.3] thin films deposited by magnetron sputtering
With respect to photoelectrical features, Ti[O.sub.2] is used to convert light into electricity in dye-sensitized solar cells (DSSC) or to separate hydrogen from water for fuel cells [5, 6].
Effect of HCl on the Formation of Ti[O.sub.2] Nanocrystallites

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